Cheap flights from Rio de Janeiro Santos Dumont Airport to Porto Alegre from $70

The cheapest month to fly to Porto Alegre from Rio de Janeiro Santos Dumont Airport is in January. Flight prices, which tend to average around $134, are often lower during this time because this is during the off-season. If you’re not able to fly to Porto Alegre in January, then May is your next best option. Flight prices from Rio de Janeiro Santos Dumont Airport to Porto Alegre during May average around $135.

Our data shows that Wednesday is the least expensive day to fly to Porto Alegre. Tickets to fly out on this day can be as low as $117. On the other hand, Tuesday is the most expensive day to depart from Rio de Janeiro Santos Dumont Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $279.

Our most recent data shows that the best time of day to fly to Porto Alegre is in the afternoon. Flights from Rio de Janeiro Santos Dumont Airport to Porto Alegre during this time can be as low as $152. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $279 on average. Flights to Porto Alegre from Rio de Janeiro Santos Dumont Airport in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

You are more likely to see cheaper flights to Porto Alegre from Rio de Janeiro Santos Dumont Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Porto Alegre for around $175 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Porto Alegre from Rio de Janeiro Santos Dumont Airport for as low as $102 on momondo.

No. A direct flight is the cheapest option for a flight between Rio de Janeiro Santos Dumont Airport to Porto Alegre.

As of October 2026, prices for Rio de Janeiro Santos Dumont Airport to Porto Alegre flights are approximately 11% cheaper when compared to flights at the same time last year.